Lock



July 6, 1937. w; MATHES 2,085,917

LOCK

Filed May 9, 1956 2 Sheets-Sheet l INVENTOR Willard Malhes I' w I Ifl/ vI A TORNEYS W. MATH ES July '6, 193 7.

LOCK

Filed May 9, 1956 2 Sheqts-Sheet 2 Tl:|.5 v

6 m mm N w Wm mm. m m m w; T I b l 2 Z 8 A a? flu 6 0 wu z n M/ J 6 L wPatented July 6, 1937 STATES LOCK Willard Mathes, Terryville, Conn,assignor to Eagle Lock Co, New York, N. Y., a corporation of ConnecticutApplication May 9, 1935, Serial No. 78,793

7 Claims.

My invention relates to looks and has special reference to combinationpadlocks.

One of the objects of my invention is to provide a padlock which is ofsimple and inexpensive construction, and in which the shackle is so heldas to withstand severe strains without danger of injury to the operatingparts of the lock.

Another object of the invention is to provide a combination padlockhaving novel and improved means for ensuring proper locking of theshackle upon insertion thereof and for preventing derangement of partswhen the shackle is withdrawn.

The several features of the invention whereby K5 the above-mentioned andother objects may be attained will be readily understood from the i01lowing description and accompanyingdrawings, in which:

Figure 1 is a front view of a padlock embodying features of my inventionin their preferred form;

Fig. 2 is a sectional elevation, on an enlarged scale, taken on the line22 of Fig. 1;

Figs. 3 and 4 are sectional elevations, respectively taken on the linesS3 and 44 of Fig. 2;

Fig. 5 is a view similar to Fig. 4, but showing certain parts in adifierent position; and

Figs. 6, 7 and 8 are sectional elevations, respec tively taken on thelines 6$, 'l'l and 88 of My improved look as illustrated in thedrawings, is in the form of a combination padlock having a lock-case 2,sliding shackle 4, a bolt 6,

and tumbler mechanism comprising disks 8 having slots or gatings ill andlugs or pins l2. The tumbler disks 8 are mounted on the usual centralstud Id riveted to the rear side of the casing, and the disks areadapted to be operated by means of the usual dial carrying knob l6mounted on the front of the casing. Acoiled spring 15 bears against therearmost disk 8.

In the illustrated construction, a plate i8 is secured on the rear wallof the lock case. This plate is provided with a horizontally bentapertured ear 29 through which the heel of the shackle extends. Theshackle heel is provided with a projecting pin 22 which is adapted topass through a clearance slot 24 in the ear 20 so that when the shackleis pulled outwardly the 0 pin may pass through the slot 24!, but the pinby engagement with the top side of the ear 2!) prevents the shackle frombeing pushed in until the shackle has been turned to aline the toethereof with the opening in the casing. The outward movement of theshackle is limited by a retainer 26 which consists of a plate having aslotted portion 28 that is received in a groove in the lower end of theheel of the shackle. The retainer 26 is guided by means of a rearwardlyprojecting lug 30 thereon, which is received in a slot 32 in thebackplate It. The retainer limits the outward movement of the shackle byengagement of the slotted portion 28 thereof with the under side of theapertured ear 20.

The bolt 6 is pivoted on a pin 34 secured to the backplate l8 and thelock-case 2. The bolt is provided with an inclined surface 36 which whenthe shackle is moved into the lock case is engaged by an inclinedsurface 38 on the lower end of the toe of the shackle which turns thebolt in a direction to move a locking shoulder thereon into engagementwith the lower Wall of a locking notch 32 in the shackle toe. The underside of the bolt 6 is provided with a downwardly projecting lug 44 whichby engagement with the tumbler disks serves to hold the bolt in lookingengagement with the shackle.

When the dial-knob I6 is turned to aline the gatings in the tumblerdisks 8, the bolt-lug 44 is permitted to enter the gatings, as shown inFigs. 4 and 5, thus permitting the shackle to be withdrawn. The top sideof the bolt is provided with a flat surface 46 which when the bolt is inlooking position abuts against a horizontally bent flange 48 on thebackplate l8, this flange serving to support the bolt when the bolt isin locked position.

A pawl 50 is hingedly connected with the end of the bolt 6, the pawlhaving a cylindrical end portion 52 which is received in a transverse Inthe illustrated construction, means, is provided whereby when the boltand pawl are moved into locking engagement with the shackle upon inwardmovement of the shackle, the disks are turned so as to position theirgatings out of register and thus hold the bolt and pawl in lookingengagement. To provide for this, a spring 5% is coiled about a pin orstud 58 on the backplate l8. One arm 60 of this spring bears against theunder side of the retainer plate 26. The other arm $2 of the springextends through a slot 63 in the retainer plate and when the bolt is inunlocked position, the end of this arm extends over a throw-pin M on therear side ofthe rearmost tumbler disk. Upon pushing the shackleinwardly, the retainer 26 is carried therewith and it in turn byengagement with the lower arm 69 of the spring 56 turns the springsoasto cause its upper arm 62 to strike the throw-pin 66, thus turning thedisk to move the gatings out of register.

From the foregoing it will be apparent that upon pushing the shackleinto the casing from its unlocked position as shown in Fig. 4, theinclined surface 38 of the toe of the shackle by engagement with theinclined surface 36 on the bolt 6, turns the bolt so as to position theshoulder 4! thereon into locking engagement with the notch 42 in the toeof the shackle. Such movement of the bolt also positions its top surfacein abutting engagement with the supporting flange 48 of the backplatel8, and causes the end of the pawl 50 to ride into the locking notch 54in the heel of the shackle. As the bolt-lug M leaves the gatings in thetumbler disks 8, the shackle retainer 23 through the spring 55 turns thetumbler disks so as to move the gatings out of alinement and thus hold.the bolt and pawl 5c in locking engagement with the shackle.

The provision of the double locking bolt which engages the heel as wellas the toe of the shackle, insures the lock being capable ofwithstanding maximum strain on the shackle without injury to theoperating parts or" the lock. The provision of means for automaticallymoving the tumbler disk gatings out of alinement upon insertion of theshackle, insures proper locking upon insertion of the shackle.

Upon withdrawal of the shackle when the disks have been turned so as toposition their gatings in alinement, the outward movement of the shackleserves to turn the bolt into the position shown in Fig. 4 with thebolt-lug Ml received in the gatings. This movement of the boltsimultaneously moves the pawl 50 out of engagement with the lockingnotch 5 in the heel of the shackle. When the shackle is withdrawn, thepawl 58 by engagement with the side of the heel of the shackle holds thebolt in unlocked position with its lug 44 in the gatings in thetumblers. This prevents turning of the tumblers and dialknob, and alsoprevents movement of the bolt into locked position previously toinsertion of the shackle.

As will be evident to those skilled in the art, my invention permitsvarious modifications without departing from the spirit thereof or thescope of the appended claims.

What I claim is: a

1. In a lock, the combination of a lock case, a shackle mounted to slidein the lock case, a shackle retainer for limiting the outward movementof the shackle, tumbler mechanism provided with a plurality of gatingsadapted to register with each other, a bolt pivotally mounted in thecasing adapted when the shackle is moved into the lock case to engagethe toe of the shackle, and said tumbler gatings are out of register tolock the shackle in the casing and when said gatings are in register topermit said bolt to turn to release the toe of the shackle, and a devicehingedly connected with the bolt acting automatically when the bolt ismoved into locking engagement with the toe of the shackle to move intolocking engagement with the heel portion of the shackle.

2. In a lock, the combination of a lock case, a shackle mounted to slidein the lock case, a locking bolt made of two parts hingedly connectedand adapted when the shackle toe is moved into the lock case to beactuated by the shackle to position it in looking engagement with boththe toe and heel of the shackle, and tumbler mechanism for holding thebolt in said locking engagement with the toe and heel of the shackle andadapted to be positioned to permit release of said bolt from lockingengagement with the shackle.

3. In a lock, the combination of a lock case, a shackle mounted to slidein thelock case, a bolt pivotally mounted in the lock case and adaptedto be engaged by the shackle when the shackle is moved into the lockcase so as to be moved thereby into locking engagement with the toe ofthe shackle, a pawl hingedly connected with the bolt so as to be movedthereby into locking engagement with the heel of the shackle, andtumbler mechanism for retaining the bolt and pawl in said lockingengagement with the shackle and adapted to be positioned to effectrelease of said bolt and pawl.

4. In a lock, the combination of a lock-case, a shackle mounted to slidein the lock-case, a bolt pivotally mounted in the lock-case and adaptedto interlock with the toe of the shackle when the shackle is moved intothe lock-case, a pawl hingedly connected with the bolt so as to be movedthereby to interlock with the heel of the shackle when the bolt moves tointerlock with the shackle toe, and means for retaining the bolt andpawl in locking engagement with the shackle, said means being adapted tobe actuated to release said bolt and pawl.

5. In a lock, the combination of a lock-case, a shackle mounted to slidein the lock-case, a bolt pivotally mounted in the lock-case and adaptedto interlock with the toe of the shackle when the shackle is moved intothe lock-case. and means interposed between the bolt and the heel of theshackle and hingedly connected with the bolt for preventing the boltfrom moving into its locking position when the shackle is withdrawn fromthe lock-case.

6. In a lock, the combination of a lock-case, a shackle, a bolt adaptedto be moved into locking engagement with the shackle when the shackle ismoved into the lock-case, tumbler mechanism having a plurality ofgatings which when the gatings are in alinementpermit the bolt to bemoved to release the shackle and when. the gatings are out of alinementhold the bolt in looking engagement with the shackle, a spring armpivoted onthe lock-case and means acting automatically upon movement ofthe shackle into locking engagement with the bolt for turning saidspring arm to actuate said tumbler mechanism to move the gatings out ofregister.

'7. In a lock, the combination of a lock-case, a shackle mounted toslide in the lock-case, a bolt adapted to be moved into lockingengagement with the shackle when the shackle is moved into thelock-case, tumbler mechanism which when in one position permits the boltto be moved to release the shackle and when the mechanism is out of saidposition hold the bolt in locking engagement with the shackle, ashackle-retainer mounted to slide with the shackle during insertion andwithdrawal of the shackle, and a device pivoted on the lock-case andactuated by said retainer for moving said tumbler mechanism out of saidposition when the shackle is moved into locking engagement with thebolt.

WILLARD MATHES.

